feat: entity move

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

shared/lib/Resource/Identifier/ResourceIdentifierInterface.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXF\Resource\Identifier;
+
+/**
+ * Top-level identifier for resources (provider level)
+ */
+interface ResourceIdentifierInterface extends \Stringable {
+
+	/** The provider segment (e.g. "imap") */
+	public function provider(): string;
+
+	/** Number of segments present (1–4) */
+	public function depth(): int;
+
+	/** Canonical string form: provider[:service[:collection[:entity]]] */
+	public function __toString(): string;
+
+}